Magellan ROADMATE COMMERCIAL 9270T-M User Handbook Manual page 6

Satellite Signal Strength
To view the satellite signal strength indicator, tap on the Menu button.
The signal strength indicator can be found in the upper right corner.
4 bars green:
Strong signal
Blank: No satellite
signals. Unable to
compute position.
If you are not getting your current location, use these tips to improve
satellite signal reception .
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Leave the garage or parking structure so the GPS receiver has a
clear view of the sky.
Satellite signals can be blocked by tall buildings, trees or
mountains. You may intermittently see a drop in signal strength
in these types of environments.
Battery
The Magellan Road Mate receiver has an internal battery that is charged
when it is being powered by the vehicle power cable or an external
(optional) AC power adapter. It is estimated that a receiver can operate
for 30 minutes from a fully charged battery.
To view the battery strength indicator, access the Main menu. The
battery strength is shown below the signal strength indicator.
It can take up to 4 hours to fully charge the battery, depending on the
battery level. However, the battery does not need to be fully charged to
use the Magellan RoadMate receiver.
Traffic Notice
Your Magellan Road Mate comes equipped with lifetime traffic but
requires that you use the supplied vehicle power adapter to work. Traffic
warnings will not appear if you are using a power adapter other than the
one supplied or operating the receiver on internal batteries.